HUST SI-D281A SIP IP Intercom Phone (CN version)

The HUST SI-D281A is a versatile SIP IP intercom phone designed for a range of applications including access control, banking, campus security, and emergency call stations. This desk phone features two-way voice communication, smart DSS buttons, and active noise cancellation for clear audio. It does not support video conferencing or handwriting touch, and operates without a built-in battery. (CN version)

Does it support series connection: Does not support series connection With battery: Without battery Handwriting Touch: not support Does it support video conferencing?: Video conferencing is not supported. type: other CCC compulsory certification: no model: YES Active noise cancellation: Supports active noise cancellation